Frontier Airlines is known for the animals that adorn its tails. Bugsy the Tree Frog graced the Airbus A320 that Frontier used for its inaugural flight to Washington Dulles on Aug. 19, 2014.
Ben Mutzabaugh, USA TODAY

A fire response vehicle prepares to give Frontier's inaugural arrival from Minneapolis a water-cannon salute on Aug. 19, 2014. Such a greeting is common for new airline service.
Ben Mutzabaugh, USA TODAY

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Frontier Airlines announced a major expansion in San Antonio, where the ultra low-cost carrier will add nine new routes to its existing schedule.

Once the flights begin, Frontier will fly non-stop from San Antonio to 23 destinations. That, Frontier says, will make it the top carrier in San Antonio as measured by the number of non-stop routes offered. (Scroll down for schedule details on all nine of the new routes)

A JetBlue Airbus tail is seen on an Airbus taxiing for takeoff while another company Airbus A320 lands at New York's JFK International Airport in January 2016.
Jeremy Dwyer-Lindgren, special to USA TODAY

The economy class cabin on Delta Air Line's new Airbus A321 is seen during the company's media day at Atlanta Hartsfield-Jackson International Airport on April 29, 2016.
Jeremy Dwyer-Lindgren, special to USA TODAY

LATAM Airlines personnel work on preparations for the official presentation of the Airbus A319 that was to transport Pope Francis during his visit to Peru in 2018. It's seen here at a hangar in Callao, Peru.
Luka Gonzales, AFP/Getty Images

A DLR A320 Airbus Advanced Technology Research Aircraft (ATRA) of the German Aerospace Center (DLR) takes off from the U.S. Air Force base in Ramstein, near Kaiserslautern, Germany, on Jan. 24, 2018.
Ronald Wittek, EPA-EFE

The nose of the first Boeing 747 looms behind the nose of its smaller and slightly older sibling, the first Boeing 737, at the Museum of Flight in Seattle on Feb. 14, 2015.
Jeremy Dwyer-Lindgren, special for USA TODAY

A prospective flight attendant works the cabin during a training exam onboard a full-size Boeing 747-400 trainer located at EVA's Taipei-based headquarters in January 2015.
Jeremy Dwyer-Lindgren for USA TODAY

Pablo Fernicola sets up a shot on the ramp of SeaTac airport during a tour on Feb. 22, 2015. The tour was for participants of Aviation Geek Fest, an annual event put on in the Seattle region.
Jeremy Dwyer-Lindgren for USA TODAY

A participant with the annual Aviation Geek Fest poses for a photo in front of a Boeing 737 engine at the Alaska Airlines maintenance hangar in Seattle on Feb. 27, 2015.
Jeremy Dwyer-Lindgren for USA TODAY

Just over one year ago, Selim Azam, a DC-10 flight engineer with Biman Bangladesh, quietly reflects on the last days of his career as the airplane that provided him a stable job for 25 years takes both of them toward retirement on Feb. 20, 2014.
Jeremy Dwyer-Lindgren for USA TODAY